Detected with [oclgrind](https://github.com/jrprice/Oclgrind). Large constant coefficients might be considered as of double type by the compiler. Data derived from these coefficients can be treated as double too. If so, such data will not be valid arguments for `native_*()` functions as in [here](https://git.esa.informatik.tu-darmstadt.de/docking/ocladock/blob/debugfastergrad/device/calcgradient.cl#L712). Therefore, such constant coefficients have be expressed with fewer decimal points so they are treated as float by any compiler.